4.6 download not working

For some reason, the 4.6 version zip file isn't working. I've downloaded it twice, and when I try to unzip I get an "unspecified error" (love those helpful Microsoft error messages!). 4.5 downloaded and unzipped fine. I've tried
this on two different computers as well, and shut off the anti-virus in case that was interferring. I downloaded and tried WinRAR as well, and it said unknown query in both files and wouldn't extract them also.